Dual Setpoint Temperature Controller with … Plus.pdfDual Setpoint Temperature Controller with Programmable Input & TIMER User Manual Omni 48+ TMR Omni 72+ TMR Omni 96+ TMR Omni +

Dual Setpoint Temperature Controllerwith Programmable Input & TIMER

User Manual

Omni 48+

TMR

Omni 72+

TMR

Omni 96+

TMR

Omni +

CONTENTS

User ManualOmniX+

1. PANEL MOUNTING & ELECTRICAL CONNECTIONS 1

2. FRONT PANEL : LAYOUT AND OPERATION 4

3. SET UP MODE : ACCESS AND OPERATION 8

4. INPUT/OUTPUT CONFIGURATION PARAMETERS : PAGE-12 10

5. OUTPUT 2 FUNCTION PARAMETERS : PAGE-11 12

6. CONTROL PARAMETERS : PAGE-10 14

7. SUPERVISORY PARAMETERS : PAGE-13 16

8. OPERATOR PARAMETER : PAGE-0 17

9. SOAK TIMER PARAMETERS : PAGE-15 19

1

Figure 1.1PANEL CUTOUTS

WARNING

MISHANDLING / NEGLIGENCE CAN R E S U LT I N P E R S O N A L D E AT H O R SERIOUS INJURY.

Section 1

PANEL MOUNTING

Follow the steps below for mounting the controller on panel:

1. Prepare a square cutout to the size shown in Figure 1.1 depending on the model (OmniX48+, OmniX72+, OmniX96+).

2. Remove the Panel Mounting Clamp from the controller Enclosure.

3. Insert the rear of the controller housing through the panel cutout from the front of the mounting panel.

4. Hold the controller gently against the mounting panel such that it positions squarely against the panel wall.

5. Slide the mounting clamp forward until it is firmly in contact with the rear face of the mounting panel and the tongues of the

clamp engage in the ratchets on the controller enclosure. Ensure that the clamp springs push firmly against the rear face of

the mounting panel for secured mounting.

ELECTRICAL CONNECTIONS

Observe the followings while making electrical connections.

1. Run power supply cables separated from Thermocouple / RTD cables.

2. Use appropriate fuses and switches, wherever necessary, for driving the high voltage loads.

3. Do not over-tighten the terminal screws while making connections.

4. Switch-off the controller supply while making / removing any connections .

The Electrical Connection Diagram is shown on the Right Side of the controller enclosure. The diagram shows the terminals

viewed from the REAR SIDE with the controller label upright. The terminal numbers are also embossed on the rear side of the

controller. Refer Figure1.2(a) for model OmniX48+, Figure1.2(b) for model OmniX72+ and Figure1.2(c) for model OmniX96+.

PANEL MOUNTING AND ELECTRICAL CONNECTIONS

Panel Cutout

45 X 45 mm-0, +0.5 mm

48+Omni Panel Cutout

68 X 68 mm-0, +0.5 mm

72+OmniPanel Cutout

92 X 92 mm-0, +0.5 mm

96+Omni

User ManualOmniX+

Figure 1.2(a) Figure 1.2(b) Figure 1.2(c)

CNC

NO85~

265

VA

C

OP-

1(Co

ntro

l)IN

PUT

SSR

T/C

Pt100

NL

REL

AY

OP-

2

5

1

2

3

4

6

7

8

9

10

CNO

REL

AY

SSR

Omni 48+

85~2

65 V

1

2

3

4

5

6

7

8

9

10

11

12

+-

SSR

T/C

Pt100

+-

INP

UT

NL

OP-

2

OP-

1 (C

ontr

ol)

Omni 72+

NC

CNO

RELAY

SSR

+-

CNO

REL

AYNC

AC

Su

pp

ly

T/C

Pt100

INP

UT

RELAY

NO

NC

C

13

14

15

16

17

12

18

11

9

10

8

6

7

1

3

2

4

5

85 ~

265

VA

C S

uppl

y

LN

+-

SSR

OP-

1 (C

ontr

ol)

OP-

2

Omni 96+

+-

SSR

NO

CRE

LAY

2

INPUT (Terminals 1, 2 and 3)

The controller accepts Thermocouples (J & K Type) and RTD Pt100. Connect Thermocouple or RTD Pt100 as described

below.

Thermocouple

Connect Thermocouple Positive (+) to terminal 1 and Negative (-) to terminal 2 as shown in Figure 1.3 (a).

Use correct type of extension lead wires or compensating cable. Avoid joints in the cable.

RTD Pt100, 3-wire

Connect single leaded end of RTD bulb to terminal 1 and the double leaded ends to terminal 2 and 3

(interchangeable) as shown in Figure 1.3 (b). Use copper conductor leads of very low resistance for RTD

connections. Ensure that all 3 leads are of the same gauge and length. Avoid joints in the cable.

3

2

1

Figure 1.3(a)

3

2

1

Figure 1.3(b)

OUTPUT 1

The Output-1 (Control Output) is factory supplied as either Relay contacts or SSR Drive Voltage, as per Ordering Codes. The

Terminals for Relay and SSR output (for all 3 models) are shown in the Figures 1.4 (a) & 1.4 (b), respectively.

N/O (Normally Open), C (Common), N/C (Normally Closed) contacts are potential-free and are rated 10A/240 VAC (resistive load).

SSR Drive Voltage

Controller outputs 12 VDC @ 40mA pulses for driving external SSR. Connect Terminal marked (+) to positive SSR Terminal

and Terminal marked (-) to negative SSR Terminal.

Figure 1.4(a)

4

5

5

6

8

9

Figure 1.4(b)

Relay

8N/C

7 C

6N/O

9N/C

8C

7N/O

12N/C

11C

10N/O

48+Omni 72+Omni 96+Omni


User ManualOmniX+

3

User ManualOmniX+

Figure 1.5(b)

7

8

10

11

6

7

SSR Drive Voltage

POWER SUPPLY

Figure 1.6

10L

11N

17L

18N

9L

10N

The controller accepts single phase, 50/60 Hz Line Voltage ranging from 85 to 264 VAC. Use well-insulated copper 2conductor wire of the size not smaller than 0.5 mm for power supply connections. Connect Line Voltage as shown in

Figure 1.6.

Figure 1.5(a)

7N/O

8

9N/C

C

10N/O

11

12N/C

C

6N/O

7

8N/C

C

Relay

OUTPUT- 2

The Output-2 is factory supplied as either Relay contacts or SSR Drive Voltage, as per Ordering Codes. The Terminals for

Relay and SSR output (for all 3 models) are shown in the Figures 1.5 (a) & 1.5 (b), respectively.




4

FRONT PANEL : LAYOUT AND OPERATION

Section 2

PPI

OP1

Upper Readout

Lower Readout

ENTER Key

UP KeyDOWN Key

PAGE Key

Output 1 statusIndicator

Omni 48+

OP2

TMR

Output 2 statusIndicator

Timer statusIndicator

User ManualOmniX+

Figure 2.1(a) : Omni 48+

Figure 2.1(b) : Omni 72+

Figure 2.1(c) : Omni 96+

PPI

OP1

Upper Readout

Lower Readout

ENTER Key

UP KeyDOWN Key

PAGE Key

Output 1 StatusIndicator

Omni 96+

OP2TMROutput 2 StatusIndicator

Timer StatusIndicator

PPI

OP1

Upper Readout

Lower Readout

ENTER Key

UP KeyDOWN Key

PAGE Key

Output 1 StatusIndicator

Omni 72+

OP2TMR Output 2 StatusIndicator

Timer StatusIndicator

5

User ManualOmniX+

POWER UP

Upon switching on the power to the controller, all displays and indicators are lit on for approximately 3 seconds. This is followed

by the indication of the model name on the Lower Readout and on Upper Readout.

KEYS

There are four tactile keys provided on the front panel for configuring the controller and setting-up the parameter values. The

Table 2.2 lists each key (identified by the front panel symbol) and the associated function.

Table 2.2

Function Symbol Key

DOWN

UP

PAGE

ENTER

Press to enter / exit Set-up mode.

Press to increase the parameter value. Pressing once increases the value by one count; holding the key pressed speeds up the change.

Press to decrease the parameter value. Pressing once decreases the value by one count; holding the key pressed speeds up the change.

Press to store the set parameter value and to scroll to the next parameter.

Table 2.1

Indicator Function

OP1

OP2

Indicates Output-1 ON/OFF status.

TMRŸ Flashes while the Soak Timer is counting down.

Ÿ Glows steadily while the Soak Timer is outside the Timer Start Band or Hold Band (that is, HOLD state).

Ÿ Flashes if OP-2 is configured as Alarm and if alarm is active.

Ÿ Indicates ON/OFF status if OP-2 is configured as Auxiliary Control.

READOUTS

The Upper Readout is a 4 digit, 7-segment bright red LED display and usually displays the Measured Temperature. In Set-up

Mode, the Upper Readout displays parameter values/options.

The Lower Readout is a 4 digit, 7-segment bright green LED display and usually displays SP (Control Setpoint) or % Output

Power. In Set-up Mode, the Lower Readout displays prompts for the parameters.

INDICATOR

The Table 2.1 below lists the three front panel indicators (identified by the Front panel legend) and the associated status.

6

User ManualOmniX+

Figure 2.2

Press ENTER key to store the

new SP Value

Adjust value onLower Readout using

UP/DOWN keys

or

MAIN Display Mode

MAIN Display Mode

Measured Temperature

SetPoint (SP)

Lower ReadoutFlashes

MAIN DISPLAY

After the Power-up display sequence, the controller enters MAIN Display Mode. The Upper Readout shows the measured

Temperature Process Value and the Lower Readout displays the SP (Control Setpoint). The MAIN Display Mode is the one

that shall be used most often.

If the controller is configured to operate in PID Control Mode; the Lower Readout can be toggled to indicate either SP or %

Output Power using the ENTER Key. The default Lower Readout upon Power-up is SP. While indicating % Power, the left most

digit indicates P and remaining digits indicate power value.

ADJUSTING SP

The SP value can be directly adjusted on the Lower Readout while the controller is in the MAIN Display Mode and the Lower

readout is showing SP value. Step through the following sequence to adjust the SP value:

1. Press and release UP/DOWN key once. The Lower Readout starts flashing.

2. Use UP/DOWN keys to adjust the SP value.

3. Press and release ENTER key. The Lower Readout stops flashing and the set value is registered and stored in the

controller’s non-volatile memory.

Timer (Soak) Mode Indication

If the soak timer is enabled, the Start command can be issued by either setting the parameter “Start” on page 0 to ‘Yes’ or by

pressing the Enter key for approximately for 3 seconds while in Main Mode.

Upon issuing Start command the lower readout immediately Starts showing Balance Soak Time. Use Enter key to toggle the

lower readout to show either Setpoint or % output power or Balance Soak Time.

Table 2.3

Over-range (Temperature above Max. Range)

PV Error Type

Under-range (Temperature below Min. Range)

Open (Sensor open / broken)

Message

Figure 2.3

TEMPERATURE ERROR INDICATION

In case the Temperature falls below the Minimum Range or rises above the Maximum Range specified for the selected ‘Input

Type’ or in case the input sensor is open / broken; the Upper Readout flashes the error messages listed in Table 2.3 below. The

Figure 2.3 illustrates an open sensor condition.

PPI

OP1

Omni 48+

OP2

TMR

7

TUNE INDICATION (Applicable for PID Control Only)

Upon issuing ‘Self Tune Command’, the controller starts tuning itself to the process under control. While the controller is busy

in Tuning itself to the process, the Lower Readout flashes the message “Tune”, as shown in figure 2.4 below. The user is

advised not to disturb the process or alter any parameter values while the “Tune” message is being flashed. The “Tune”

message automatically disappears upon completion of Tuning procedure and the controller reverts to MAIN Display Mode.

Figure 2.4

PPI

OP1

Omni 48+

OP2

TMR

User ManualOmniX+

8

The controller requires various user settings that determine how the controller will function or operate. These settings are

called Parameters.

For the convenience and ease of operation, the various parameters have been grouped separately depending upon the

functions they define. Each such group is called a PAGE. Each PAGE is assigned a unique number, called PAGE NUMBER,

for its access. The parameters contained in a PAGE are presented in a fixed sequence to the user for setting. The user can

access a desired PAGE by entering its PAGE NUMBER and can select and set the desired parameter values.

PARAMETER PROMPTS

Each parameter has an identifying tag, called the Parameter Prompt. While setting parameter values in a PAGE, the

parameter prompt is always displayed on the Lower Readout and its current value is displayed on the Upper Readout.

ACCESSING A PAGE

Each PAGE is accessible only from the MAIN Display Mode. That is, from the current PAGE, the user must return to the MAIN

Display Mode before the other PAGE can be accessed.

Figure 3.1 illustrates access to the desired PAGE from MAIN Display Mode.

Figure 3.1

ADJUSTING PARAMETER VALUES

For accessing and adjusting the parameter, one must first open the PAGE containing the parameter.

Figure 3.2 illustrates how to access the desired parameter(s) and adjust the corresponding value(s). The example shows

accessing the parameter ‘Control Logic’ and changing its value from ‘Reverse’ to ‘Direct’. Press PAGE key to revert to MAIN

Mode.

Figure 3.2

SET-UP MODE : ACCESS AND OPERATION

Section 3

MAIN Display Mode

Press PAGE key to enter Set-up mode

Press ENTER key to open

the Page

Use UP/DOWN keys to set

Page Number

or

Default Page Page Number First Parameteron PAGE-12

First Parameteron PAGE-12

Keep pressing ENTER Key to select desired parameter

Use UP/DOWN keys to set the

value to dir Logic

Press ENTER key to store the value &

move to next parameter

Next Parameteron PAGE-12

Next Parameteron PAGE-12

New Parametervalue

or

User ManualOmniX+

9

PARAMETER LOCKING

For protecting the parameter values from unauthorized / accidental alterations, the parameter adjustments can be Locked.

The Operator Page is not affected by locking.

Locking

Follow the steps below to apply Locking when the controller is unlocked.

1. Press and release PAGE key while the controller is in the MAIN Display Mode. The Lower Readout shows PAGE and the

Upper Readout shows 0.

2. Use UP / DOWN keys to set the Page Number to 123 on the Upper Readout.

3. Press and release ENTER key. The controller returns to the MAIN Display Mode with the Lock enabled.

The Figure 3.3 illustrates the steps for Locking.

Figure 3.3

SETTING DEFAULT VALUES

The controller is shipped from the factory with all the parameters set to their default values. Refer Figure 3.4 above for

regaining the factory default values.

Un-Locking

For Un-Locking, repeat the sequence of steps shown in figure 3.3 twice.

Press PAGE key to enter Set-up mode

Use UP/DOWN keys to set the‘Locking’ Code

Press ENTER keyto Lock & Return to

MAIN Mode

MAIN Mode

MAIN Mode

Default Page Locking Code

or

Figure 3.4

User ManualOmniX+

Press ENTER key.Controller resets and restarts with default parameter values

Press PAGE key to enter Set-up Mode

Use UP/DOWN keys to set the‘Default’ Code

MAIN Mode

MAIN Mode

Default Page Default Code

or

10

Parameter DescriptionSettings

(Default Value)

Select Input type in accordance with the type of sensor (Thermocouple or RTD) connected for temperature measurement.

INPUT TYPE

(Default : Type K)

CONTROL LOGIC

ReverseHeating Control (Output Power decreases with increase in Temperature).

DirectCooling Control (Output Power increases with increase in Temperature).

Reverse

Direct

(Default : )Reverse

SETPOINT LOW

Sets minimum permissible control setpoint value.

Min. Range to Setpoint Highfor the selected Input type

(Default : Min. Range for the)Selected Input Type

SETPOINT HIGH

Sets maximum permissible control setpoint value.

Setpoint Low to ax. RangeMfor the selected Input type

(Default : Max. Range for the)Selected Input Type

DIGITAL FILTER

This value determines the averaging rate of measured temperature and thus helps removing undesired fast changes in the measured temperature. The higher the value the better the averaging but the slower the response to actual changes. The default value, 1.0 Second, is appropriate in most cases.

0.5 to 25.0 Seconds(in steps of 0.5 Seconds)

(Default : 1.0)

OFFSET FOR MEASURED TEMPERATURE

This value is algebraically added to the measured Temperature to derive the final temperature that is displayed and compared for alarm / control.

Final Temperature = Measured Temperature + Offset

-1999 to 9999 or-199.9 to 999.9

(Default : 0)

INPUT / OUTPUT CONFIGURATION PARAMETERS : PAGE-12

Table 4.1

Section 4

Refer Table 4.1 for the parameter descriptions and settings.

Refer Table 4.2 for various available 'Input Types' along with their respective Ranges and Resolutions.

User ManualOmniX+

11

(Min to Max)Range

3-wire, RTD Pt100

3-wire, RTD Pt100

-199 to +600°C

-199.9 to +600.0°C

ResolutionOption What it means

1°CType J Thermocouple

Type K Thermocouple

0 to +960°C

-200 to +1375°C 1°C

1°C

0.1°C

Table 4.2

User ManualOmniX+


(Default Value)

OUTPUT-2 FUNCTION SELECTION

This parameter configures Output (OP2) as;

None Disables Output-2, that is, keeps Off.

Alarm Output-2 activates in accordance to Alarm settings.

Control Output-2 activates in accordance to Auxiliary Control settings.

Blower Output-2 activates in accordance to Blower / Compressor Control settings.

Soak Time OutputOutput-2 remains energized during Soak Time execution, if Soak Timer function is enabled.

None

Alarm

Control

Blower

Soak TimeOutput

(Default : None)

12

OUTPUT-2 FUNCTION PARAMETERS : PAGE-11

Table 5.1


(Default value)

ALARM LOGIC

NormalThe Alarm output (Relay/SSR) remains ON under alarm condition; OFF otherwise. Useful for Audio / Visual Alarm.

ReverseThe Alarm output (Relay / SSR) remains OFF under alarm condition; ON otherwise. Useful for Tripping the system under control.

ALARM INHIBIT

NoAlarm is not suppressed for start-up condition.

YesThe Alarm activation is inhibited (suppressed) until the Temperature is found within alarm limits from the time the controller is switched ON.

ALARM TYPE

Sets the Alarm type;

Process LowThe alarm activates for Temperature less than or equal to Alarm Setpoint.

Process HighThe alarm activates for Temperature greater than or equal to Alarm Setpoint.

Deviation BandThe alarm activates if the Temperature deviation from SP is greater than the set positive or negative ‘Deviation Band’ value.

Window BandThe alarm activates if the Temperature deviation from SP is greater than the set ‘Window Band’ value in either direction.

End Of SoakThe OP2 Relay / SSR is switched ON for the time duration set for the parameter ‘Alarm Timer’.

Normal

Reverse

(Default : Normal)

Yes

No

(Default : Yes)

Section 5


(Default : Process Low)

Process Low

Process High

Deviation Band

Window Band

End of Soak

ALARM TIMER

Available for End of Soak Alarm. Sets time duration in seconds for which the alarm shall activate upon End of Soak Timer.

5 to 250

(Default : 10)

User ManualOmniX+

OP2 Function : Alarm

13

User ManualOmniX+

(Default : 0)

0 to 600 Sec.(in steps of 0.5 Sec.)

BLOWER / COMPRESSOR HYSTERESIS

This parameter value sets a differential (dead) band between the blower ON and OFF states. Keep it large enough to avoid frequent switching of the load without losing the desired control accuracy.

1 to 250 or0.1 to 25.0

(Default : 2 or 0.2)

CONTROL LOGIC

NormalThe Output remains ON for Temperature below Setpoint and OFF otherwise.

ReverseThe Output remains ON for Temperature above Setpoint and OFF otherwise.

Normal

Reverse

(Default : Normal)

BLOWER / COMPRESSOR TIME DELAY

This parameter is mainly used for Compressor Load. For compressor switching it is desired that once the compressor is switched OFF, there must be some time delay before it is switched ON again. The switching ON of the compressor should therefore take place only if both the conditions, that is; the time delay is elapsed and PV is above the Setpoint, are satisfied.

The ‘Time Delay’ parameter allows the user to set the optimum time delay that ensures both, the enhanced compressor life and the desired control accuracy.

Set this parameter value to zero if no time delay is required.

OP2 Function : Blower

1 to 999 or0.1 to 99.9



(Default value)

HYSTERESIS

This parameter value sets a differential (dead) band between the ON and OFF control states. Keep it large enough to avoid frequent switching of the load without losing the desired control accuracy.

OP2 Function : Control

14


CONTROL PARAMETERS : PAGE-10

Section 6

Table 6.1

User ManualOmniX+


(Default Value)

(Default : PID)

On-Off

PID

HYSTERESIS (For On-Off Control only)

Sets differential (dead) band between On-Off switching of the control output (Relay/SSR).

CONTROL MODE

Select appropriate Control Algorithm suited for process requirement.

On-OffThe control algorithm tends to maintain the Temperature at SP by either switching the output fully OFF or fully ON. The On and Off switching is differentiated by the user settable ‘Hysteresis’.

PIDndThe control algorithm uses a 2 order equation to compute the ‘%

Output Power’ required to maintain the Temperature at SP. The constants P, I, D are automatically set by the controller by issuing Self-Tune command.

1 to 999or

0.1 to 99.9


CYCLE TIME (For PID Control only)

For time-proportionating PID control, the output power is implemented by adjusting the ratio of ON : OFF time of a fixed time interval, called ‘Cycle Time’.

Larger Cycle Time ensures longer Relay/SSR life but may result in poor control accuracy and vice-a-versa. The recommended Cycle Time values are; 20 sec. for Relay and 1 sec. for SSR .

0.5 to 120.0 Seconds(in steps of 0.5 Seconds)

(Default : 20.0 Sec)

(Default : 0)

0 to 600 Sec.(in steps of 0.5 Sec.)

COMPRESSOR TIME DELAY(For On-Off Control only)

This parameter is mainly used for Compressor Load. For compressor switching it is desired that once the compressor is switched OFF, there must be some time delay before it is switched ON again. The switching ON of the compressor should therefore take place only if both the conditions, that is; the time delay is elapsed and PV is above the Setpoint, are satisfied.

Set this parameter value to zero if no time delay is required.

15

User ManualOmniX+


(Default Value)

INTEGRAL TIME (For PID Control only)

The application of proportional band alone results in process value stability within the band but away from the setpoint. This is called steady state Offset Error. The integral action is incorporated for automatic removal of offset error with minimum oscillations.

The Integral Time value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustments.

Setting the value 0 cuts-off Integral action.

0 to 1000 Seconds

(Default : 100 Sec)

DERIVATIVE TIME (For PID Control only)

It is desired that the controller should respond to any dynamic changes in the process conditions (like variations in load, power supply fluctuations, etc.) fast enough so as to retain the process value near the setpoint. The Derivative Time determines how strong the output power will change in response to the rate of change of measured PV.

The Derivative Time value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustments.

Setting the value 0 cuts-off Derivative action.

0 to 250 Seconds

(Default : 25 Sec)

PROPORTIONAL BAND (For PID Control only)

The Proportional Band is defined in terms of process value deviation from the setpoint (also known as process error). Within the band the output power is varied from maximum (100%) at maximum deviation to minimum (0%) at minimum deviation. The process value thus tends to stabilize at a point within the band where the power input equals losses. Larger Band results in better stability but larger deviation.

The Proportional Band value is automatically calculated by controller’s Self-Tune feature and seldom requires any manual adjustments.

0.1 to 999.9(Default : 10.0)

16


SUPERVISORY PARAMETERS : PAGE-13

Table 7.1


(Default Value)

1.0 to 2.0(Default : 1.2)

Disable

Enable

(Default : Disable)

Set this parameter to YES to activate ‘Tuning’ operation.

Select as NO if, for any reason, the ‘Tuning’ operation in progress is to be aborted.

SELF-TUNE COMMAND

(Default : No)

Yes

No

Set this parameter to ‘Enable’ if the process exhibits unacceptable overshoot upon start-up or a step change in SP. If Enabled, the controller monitors and controls the rate of change of Temperature in order to minimize or eliminate overshoot.

OVERSHOOT INHIBIT ENABLE / DISABLE

This parameter is available only if ‘Overshoot Inhibit’ is enabled. Adjust this parameter value to improve the effectiveness of the controller’s Overshoot Inhibit feature. Increase the value if the overshoot is curbed but the Temperature takes too long to reach the SP. Decrease the value if the overshoot persists.

OVERSHOOT INHIBIT FACTOR

Section 7

User ManualOmniX+

Disable

Enable

(Default : Enable)

The OP2 Setpoint is available on operator page (PAGE 0) for view and adjustment. The adjustment, can be locked by setting this parameter value to ‘Disable’. Locking protects the SP from any inadvertent changes.

OP2 SETPOINT EDITING PERMISSIONON OPERATOR PAGE

This parameter allows the user to enable (permit) or disable (restrict) the issuance of ‘Abort’ command from operator page to Abort (Stop) the running Soak Timer.

SOAK ABORT COMMAND ON OPERATOR PAGE

This parameter allows the user to enable (permit) or disable (restrict) the adjustment of the ‘Soak Time Duration’ on operator Page.

SOAK TIME ADJUSTMENT ONOPERATOR PAGE

Disable

Enable

(Default : Enable)

Disable

Enable

(Default : Enable)

17

OPERATOR PARAMETER : PAGE-0

Table 8.1

Section 8

User ManualOmniX+

Parameter Description Settings(Default value)

00.05 to 60.00 MM:SSor

00.05 to 99.55 HH:MMor

1 to 999 Hours



ALARM BAND

(Available if OP-2 function is Alarm)

Available only if selected ‘Alarm Type’ is ‘Window Band’. This parameter value gets subtracted from the Control Setpoint (SP) to define Process Low and added to the Control Setpoint (SP) to define the Process High Alarm Limit.

ALARM DEVIATION


Available only if selected ‘Alarm Type’ is ‘Deviation Band’. This parameter value can be set as Negative (-) or Positive (+) and gets added to the Control Setpoint (SP) to define either Process Low (negative deviation band) or Process High (positive deviation band) Alarm Limit.

ALARM SETPOINT


Available only if selected ‘Alarm Type’ is either ‘Process High’ or ‘Process Low’. This parameter value sets the Upper (Process High) or Lower (Process Low) Alarm Limit.

3 to 999 or 0.3 to 99.9


-1999 to 9999 or-199.9 to 999.9


Minimum to MaximumRange specified for the

selected Input Type

(Default : 0)

(Default : No)

Yes

No

(Default : No)

Yes

No

SOAK START COMMAND

(Available only if Soak Timer is enabled)

Set to ‘Yes’ to start soak timer. Not available if timer already running.

SOAK ABORT COMMAND


Set to ‘Yes’ to abort a running timer. Available if timer is running.

SOAK TIME


The set time value for the soak timer in the selected time units.

18

User ManualOmniX+

BLOWER CONTROL SETPOINT

(Available if OP-2 function is Blower)

This parameter value sets a positive (+) offset to the SP to define the ‘Blower / Compressor Setpoint’.

0.0 to 25.0

(Default : 0)

SETPOINT LOCKING

This parameter allows locking the adjustment of the SP on Lower Readout in Main Display Mode. For Locking, set the parameter value to ‘Yes’. This allows the operator to protect the SP from any unauthorized changes. (Default : No)

Yes

No

AUXILIARY CONTROL SETPOINT

(Available if OP-2 function is Control)

This parameter value sets an offset to the Control Setpoint (SP) to define another (Auxiliary) setpoint either above (positive value) or below (negative value) the SP.

(Min. Range - SP) to(Max. Range - SP)

(Default : 0)

Parameter Description Settings(Default value)

19

SOAK TIMER PARAMETERS : PAGE-15

Table 9.1

Min:Sec

Hours:Min

Hours

(Default : Min: Sec)


Default Value

Yes

No

(Default : No)

TIMER ENABLE

Yes Soak Timer function is enabled.

NoSoak Timer function is disabled.

TIME UNITS

Select the time units for Soak Time Duration.

TIME DURATION

The preset time value in selected units for the Soak Timer.

00.05 to 60:00 Min:Sec 00.05 to 99:55 Hrs:Min

1 to 999 Hours(Default : 00.10 Min:Sec)

TIMER-START BAND

After issuance of start command, the timer starts counting down once the Temperature enters the band around SP defined by this parameter value.

0 to 9999 or0.0 to 999.9


None

Up

Down

Both

(Default : None)

HOLDBACK STRATEGY

NoneTemperature based timer pause is not required.

UpTimer is paused if Temperature is outside holdband above SP.

DownTimer is paused if Temperature is outside holdband below SP.

BothTimer is paused if Temperature is outside holdband either above or below SP.

HOLD BAND

Sets the temperature limit(s) with respect to the SP for the timer to pause. The timer stops counting down so long as the Temperature is outside this band value.

1 to 9999 or0.1 to 999.9


Section 9


User ManualOmniX+

20


Default Value

POWER-FAIL RECOVERY METHOD

Continue The Soak Timer resumes operation for the balance time.

StartThe timer re-runs the complete soak time.

AbortThe timer operation is suspended until a new start command is issued.

(Default : Continue)

Continue

(Re)Start

Abort

SOAK TIMER OPERATION

Figure 9.1

SP

PV

Time

PV

Set Time

PV enters start band,Timer count down starts

Start Band

Basic Operation

The Soak Timer is essentially a preset timer that can be configured to run as :

(a) A Free Running Timer by setting timer ‘Start Band’ to 0. That is, the timer starts counting down immediately upon

issuance of Start Command by the user and continues until set time is elapsed.

(b) A Setpoint Dependent Timer. That is, after issuance of Start Command, the count down starts only after the PV

reaches within timer ‘Start Band’. The timer start band is a symmetrical band centered around the SP. For example,

for a start band of 2°C and SP value of 100°C, the count down begins once the PV reaches a value within 98°C (SP -

Start Band) to102°C (SP + Start Band). Note that, once the PV enters ‘Start Band’, the timer continues to run

regardless of whether the PV remains within or outside the ‘Start Band’.

User ManualOmniX+

CONTROL OUTPUT OFF AT TIMER END

YesThe control output (OP1) is forced off upon completion of timer.

NoThe control output state is not forced.

Yes

No

(Default : No)

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User ManualOmniX+

Hold Band Operation

The timer is also provided with a ‘Hold Band’ that can be enabled to make sure that the timer counts down only while the

PV is within the ‘Hold Band’. That is, the timer pauses (holds counting down) whenever the PV is outside the ‘Hold Band’.

The ‘Hold Band’ is set with respect to the SP and can be set above or below or above and below the SP. For example, a 5

°C Hold Band below the SP (say,100°C) will force the timer in pause state whenever the PV is equal or less than 95°C

(SP - Hold Band).

Power-fail Recovery Modes

The timer facilitates 3 different power-fail recovery modes, viz., Continue, Re-start and Abort. In Continue mode, the timer

resumes to execute the balance soak time once the PV is detected within Hold Band. In Re-start mode, the timer

executes the complete set time all over again. In Abort mode, the timer stops execution until a start command is issued.

End-of-Soak Events

The output Relay/SSR modules, OP2 and/or OP3, can be configured as End-of-Soak Alarm with a settable alarm

duration. That is, upon completion of Soak Time execution, the Relay energizes (say, to activate a buzzer) for the set

alarm duration.

Additionally, the controller provides ‘Output-Off’ strategy that can be enabled to force the control output OP1 off upon End-

of-Soak. The output becomes active again after issuance of Start Command for the execution of a new Soak Time Cycle.

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w w w . p p i i n d i a . n e t

Process Precision Instruments

101, Diamond Industrial Estate, Navghar, Vasai Road (E),

Dist. Palghar - 401 210.Maharashtra, India

0250 - 2391722/33/37/42 07498799226, 09321985369

[email protected] [email protected],

May

2019

Documents

Dual Setpoint Temperature Controller with … Plus.pdfDual Setpoint Temperature Controller with Programmable Input & TIMER User Manual Omni 48+ TMR Omni 72+ TMR Omni 96+ TMR Omni +